Yu Kaiqing, Ji Xiaozhou, Yuan Tianyu, Cheng Yao, Li Jingjing, Hu Xiaoyu, Liu Zunfeng, Zhou Xiang, Fang Lei
State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, College of Chemistry, Nankai University, Tianjin, 300071, China.
Department of Chemistry, Department of Materials Science and Engineering, Texas A&M University, College Station, TX, 77843, USA.
Adv Mater. 2021 Nov;33(44):e2104558. doi: 10.1002/adma.202104558. Epub 2021 Sep 13.
It is highly desirable to develop compact- and robust-film jumping robots that can withstand severe conditions. Besides, the demands for strong actuation force, large bending curvature in a short response time, and good environmental tolerance are significant challenges to the material design. To address these challenges, this paper reports the fabrication of a thin-film jumping actuator, which exhibits a shrimp-shell architecture, from a conjugated ladder polymer (cLP) that is connected by carbon nanotube (CNT) sheets. The hierarchical porous structure ensures the fast absorption and desorption of organic vapor, thereby achieving a high response rate. The actuator does not exhibit shape distortion at temperatures of up to 225 °C and in concentrated sulfuric acid, as well as when immersed in many organic solvents. This work avails a new design strategy for high-performance actuators that function under harsh and complicated conditions.
开发能够承受恶劣条件的紧凑且坚固的薄膜跳跃机器人是非常有必要的。此外，对强大的驱动力、在短响应时间内的大弯曲曲率以及良好的环境耐受性的需求，对材料设计而言是重大挑战。为应对这些挑战，本文报道了一种由碳纳米管（CNT）片连接的共轭梯形聚合物（cLP）制成的具有虾壳结构的薄膜跳跃致动器的制造方法。这种分级多孔结构确保了有机蒸汽的快速吸收和解吸，从而实现了高响应率。该致动器在高达225°C的温度下、在浓硫酸中以及浸入许多有机溶剂时都不会出现形状变形。这项工作为在恶劣和复杂条件下运行的高性能致动器提供了一种新的设计策略。
